Finding the Fourth Proportional to 121,912.41, 168,253.08 and 68,211.03
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Solution
The fourth proportional to 121,912.41, 168,253.08 and 68,211.03 is: 94,139.03
Step by Step Solution
- Step 1: Write the proportion equation
121,912.41 : 168,253.08 = 68,211.03 : x - Step 2: Convert to fraction form
121,912.41/168,253.08 = 68,211.03/x - Step 3: Cross multiply
121,912.41x = 168,253.08 × 68,211.03 - Step 4: Simplify right side
121,912.41x = 11,476,715,887.47 - Step 5: Solve for x
x = 11,476,715,887.47/121,912.41 - Step 6: Final answer
x = 94,139.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.